Two-position work holding device



Aug. 17, 1943. A. H. ESTY TWO POSITION WORK HOLDING DEVICE Filed May 4, 1942 a s o r 4 33 3: :/v //m an on Q w E 3 .07? $5 v I F 4 a L J %M m l z' g. 4

INVENTOR ALFRED HOUGHTON-ESTY.

A T TOPNE VS.

Y IUNITED "fSTATES @PATEN-T OFFICE flfrvt'o-rosfrrrouwonn Homin d nrgvros i Alfredrfioughtonijlisty, Santa Cruz, Calif as signonof one-fourth to Walter H; Oellerich and one-fourth to Charles 'Gruns'ky both of Santa viewfan on;

App-lication May4,1942,-3erialhid-441,605

" My invention relates to a two-positionwork holding devicQand more particularlyto such" a work-holding device WhichQ'in its smaller sizes; is

ideally adapted for are iii-model airplane con- Among the objects'of my inventionare: To pro vide a, work holding device-having a plurality of guide members that can be moved'from opposed, to parallel positions; to providea work-holding devicein which contours can be taken directly from drawing to provide a work-holding device whereinfoppos'ed members can be symmetrically arranged on oppositesides of-a center line; to provide a two-position work-holding 'd'evice ideally adapted'forniode'l airplane construction two-position workeholdingfievice.

Otherobjectsof my invention'will be apparent or will be specifically pointed out in the description forming a part of this specification, butlI'do not limit myselffto the embodimentof the invenor the like, andtoprovide' a simple and efficient portions when the device is rotated into the position shown in Fig. 3,: The right and left hand portions. ofthetwoend supports I and 2 are respectively connected together by bars andZl which extends between them to position the end supports, when the latter are on a horizontal surface,

in a vertical position; Bars 29 and 2| are provided with slots 22 extending between'the end supports. In the slots are mounted a plurality of boltslll extendingithrough the slots and through slotted extensionsfZfi of a plurality of guidemembers 26 positioned at right angles to the extensions: :Surfaces 21 are preferably provided with centering'lines 28 and 2%. Each guide member may, therefore, be bolted to the bars by the useof tion herein" described, as various-forms may be adoptediwithinthescope or the claims.

In th drawingi 1 7 Fig. 1 is atop planview of one preferred form of my invention in aposition withthe guide-members of each pair in" parallel relationship.

Fig. 2 is a sectional view taken as indicated by;

theline 2'2 in Fig.1; i

Fig. '3: isatop planview'of the device otFigQ'l rotatedtoplace the" guide members of each pair in Opposed relationship? i3? 1 5 wing nuts 3! mounted on the end of each bolt 24. The arrangement will permit the guide members tosbe moved to any position desired in aplane parallel to the'plane of the bars. 1 a a t '.:There'ar'e a number'of manners inwhich this two'position work'holderuoan be utilized. I'lprefor to describe it, for example, as being used for the construction of model airplanes. For such model airplane construction the surfaces 27 of the guide members opposite to extensions'EE thereof,

" are preferably-waxed. The guide members theme Fig. 4 isthe section taken as indicated by the Myinvention ay bemore fully-understoodby direct reference to the drawing. A pair 'ofend supports I- and {are provided, each of these supports comprising right andleft hand portions 3 1 and 4 joined along one edge only 'a centrally located' hinge 51 Legs '6 andJ' are prOVided on each portions and 4 respectively, these legs being provided with adjacent feet l9 and, preferably of rubber, as shown 'in Fig. 2 ontlie respective sides of the corners thereof. These feet are for contact witli'a foundationsurface as the device ishingedas'will be explained later.

The end faces of *each offthe end supports I" selves are preferably made from soft pine or other suitablematerial. The device may be considered to be in position I when the end supports are locked as shoivn'in Fig. 1, and inpositionIIas showninFigB. M 7 ;..In'illustrating one use of the device I maystart with the device ilocked inxposition II as shown in Figs. 3 and 4, ine this case the right and left;

i hand portions Band 4 of the endsupportsl and Zare swung, outwardly on hinge .5 and the device flocked together by engagement of hooks and pins 18 and I9. Under these conditions the'deand 2'are-provide'd' with hooks i2 and'pins M to lockthefrightand lefthand-portion's inthe positionshown in Fig. 1, the hinge thickness being compensated for'by buttons 15 placed between the twoportions of the end plate. In addition, the

"example, onlya center line and one side of a symmetrical :figure; drawn thereon, with buttons 7 l5 contacting thej drawingxand with center line lateral edges of: the end supports opposite fromf legs 6 and "I'areiprovided with hook and pin'mem hers 118 and t9; respectively to be used be 32 of thedevice directly'over'the'center line of such drawing I Under these circumstances each guide me'mberi-along one bar only, can he set to" fol1oW a-.-line.onthe drawing' aThe device may then be unlocked and rotated to position lz as shown in Fig. 1, and locked in .that position by the use of locks l2 and pins M. The other set of guide'members may then beset to be parallel with theopreviou'sly adjusted set, until the members of each side-by-side pair register properly.z

When both lines of guide members have been adjusted to register, structuralmembers such as, for example, portions of an airplane fuselage may be pinned, clamped or otherwise temporarily ap plied to the guide member surface 21 to hold such structural portions in proper. position with respect to the center lines 28 and 29 so thatQwhen the device is rotated into positionfII the,struce,

tural members will come intoi-proper relationone to the other. They may then be connected as. for example, by ribs, inserted between the strucsymmetrical design. It should also be pointed out that other uses of the device will be apparent to those skilled in theart. -'For example,

2,327,030 tically disposed guide surfaces facing vertically disposed guide surfaces of guide members on said other connecting member; means enabling adjustment of the distances between corresponding guide members and the angular disposition of guide surfaces whereby said guide members may be adjusted to outline desired contours; means. 7 for securing said end platesections to permit relaftive rotation of one withrespect tothe other through an angle sufficient to bring said guide surfaces into approximately a common planerfor the temporary application of contour elements of a -structure to be fabricated, following which said guidefsurfaces' may be restored to their original opposing positions for the application. of joining elements to said contour elements.

tural members held on the separate sets of opposed guide members' In this manner two sides of a symmetricalstructure maybe joined. It" will be noted-"that 'in' position II .offthe device, structural portions, held on the guide-membersurfaces 21 can be worked on, either from top or non-symmetrical structures (such as airplane wings).may be fabricated, as thelalinement of guide'members along one bar may .be'adjusted. to one contour, and the opposite set of guide members may be adjusted to another,'with'struc tural portions of correspondingcontour mounted a on the guide members." Furthermore, while I have described my invention as beingideally adapted for use in the construction of modeljair.'

planes, in the larger sizes, it is obviously capable or handling structures of a size correlated with the size of the device.

ingend plates'hing'ed together in order that they maybe rotated to place the guide members either in opposition or facing the same generaldirection, it is. deemed an obvious equivalent to make the two portions of the device completely Fsepa; rable, and then to provide means, suchas dowels, cooperating so thatthe two halves of the device may be taken apart andputtogether and ieckea in either "of the two positions described l ure thermore, whil'el have described my device as having Qguide members which are adjustable'on the'bars, both as to angle and as todistan'ce from number of identical structures are to fbe fabri' cated' all havingthe same contour, that guide members permanently fixed 'to the bars mayibe utilized. In addition my invention is'deemed'to' include theme of a single h'alf only with "the guide 'membersthereof holding a 's'tructural member in-proper position for additional 's'truct'ura members to be'attached thereto;

l claimt 1f TA" work-holding. device'comprising a pairzo f end plates, said end plates each being'formed'of a pair of sections; spaced connecting members joinf While I have described myinvention as hav- 1 the central planeit is obvious that in case a large ingicorrespondin'gsections of said end plates; a

plurality-of guide "members 'disposedalongeach of-said connecting members, with the guide members'zonlone connecting memberpresentingver-J 2. A work-holding device comprising a pair of end plates; said endplates each being formed of a pair of edge-to-edge disposed sections; spaced connecting members joining corresponding sections of said end plates; a plurality of; guide members disposed along each ,of said connecting members, with the guide members on one connectingmember presenting guide surfaces -fac ing guide surfaces of guide members-on saidother connecting member; meansenablingadjustment of the distances between opposing guidemembers and the angular disposition of guide surfaces wherebysaid guide members may be adjusted to' outline desired contours; means for securing said end plate sections to permit'relative rotation of one with respect to theother through an angle a of approximately 180? to bring said sectionsinto contact along diff erent edges thereof, whereby said guide; surfaces :can be shifted. into position for the temporary 'applicationof contour ;elements of a structurefto be fabricated and then restored to their original positionsfor the application of joining elements t'o said. contour ele-' ments.-' 3. A work-holding device comprisingja-pair of end plates, said end plates each being formedeof V a pair of edge-to-edge disposed sections; spaced connecting members joining corresponding 'sec-' tions of said end plates; aplurality of guide members disposed along each of said connecting members, with: the guide members, on 'oneconnecting member presentingguid surfaces, facing guide surfaces of guide members on said other-cone necting member; means enabling adjustment" of the distances between opposing guider-members' and the angular disposition of guide surfaces whereby said guide members may bead-justedto outline desired contours; 'meanshingedly secur ing saidend plate"; sections at adjacent corners thereof to permit relative rotation of onesectlon with respect to the other through an angle. of f approximately 180,to bring said sectionsdnto: contact. along different edges thereofgwhercby' said guide surfacesi'can be shifted into position for'the temporary application of' contour elements of a structureto befabricated-and'then'restored to their-original positionfor the application of joining elements to said contour elements. r-

4. A work-holding device comprising a pairof end plates, said end plates each being formed of a I pair of edge-:to-edg'e e disposed sections; 1 spaced.

connecting members joining correspondingsections of'said end plates;:a pluralityof guidemem- X bers disposedalong each of said connecting memj-j bers,with the guide members on one connecting; member presenting guidesurfacesfacing guide ,surfaces of guide. members onisaidfother cons-i necting member; means enabling adjustment of the distances between opposing guide members' and the angular disposition of guide surfaces whereby said guide members may be adjusted to a outline desired contours; means for securing said end plate sections to permit relative rotation of one with respect to the other through an angle of approximately 180 to bring said sections into contact along difierent edges thereof, whereby said guide surfaces can bev shifted into position for the temporary application of contour elements of a structure to be fabricated and then restored to their original positions for the application of joining elements to said contour'elements, said guide surfaces haying guide lines thereon'to facilitate the application of such contour elements to said guide surfaces. V r

5. A work-holding device comprising a pair of end plates, said end plates each being formed of ca pair of edge-to-edge disposed sections; spaced surfaces of guide members onsaid other connect ing member; means for securing said end plate 7 sections to permit relative rotation of one with V I respect to the other through an angle of approxil0" bers, with the guide members on one connecting member presenting guide surfaces 'facing guide mately 180 to bring said sections into econtact along different edges thereof, whereby saidguide surfaces can be shifted into position for the temporary application of contour elements of a structure to be fabricated and then restored to their original positions for the application of joining elements to said contour elements. 7

ALFRED HOUGI-I ETON 

